Former Nissan executive Greg Kelly said Wednesday he was "not guilty of any crime" as the defence wrapped up its case in Tokyo, where he faces jail over financial misconduct allegations.

A Tokyo court has upheld jail sentences for a US father-son duo who helped ex-Nissan chief Carlos Ghosn flee Japan, as the pair waived their right to appeal.

A week-long grilling of former Renault-Nissan boss Carlos Ghosn in Lebanon by French investigators was the first "fair" treatment he received since his arrest in Japan, his lawyers said Friday.

French investigators started interrogating former Renault-Nissan boss Carlos Ghosn Monday in Lebanon, where he has sought refuge since a dramatic escape from Japan, a court source said.

A US father-son pair accused of helping former Nissan boss Carlos Ghosn in his audacious escape from Japan arrived in Tokyo on Tuesday after losing their battle against extradition.

An Istanbul court on Wednesday sentenced three Turks to four years and two months in prison for helping smuggle former Nissan boss Carlos Ghosn in a musical instrument case from Lebanon to Japan.

Japanese auto maker Nissan said Monday it is not in talks with Apple to develop self-driving cars, a week after Hyundai also denied reports it was discussing the top-secret project with the US tech giant.

A whistleblower at Nissan told a Tokyo court on Thursday he had been instructed to find ways of boosting the retirement benefits of the fugitive former chairman Carlos Ghosn.

Proceedings in a $95 million lawsuit brought by Japanese car giant Nissan against its former chairman Carlos Ghosn began Friday in a court near Tokyo.

Fugitive auto tycoon Carlos Ghosn made his first public appearance in months Tuesday to launch a business programme at a Lebanese university.

Greg Kelly, a former aide to ex-Nissan chief Carlos Ghosn, pleaded not guilty on Tuesday to allegations of financial misconduct as his trial began in Tokyo.

The trial opened in Turkey on Friday of seven suspects over the audacious escape of former Nissan chief Carlos Ghosn from Japan to Lebanon via Istanbul in December, local media reported.